CN202787056U - Pier hinged structure of steel structure overhead bridge - Google Patents
Pier hinged structure of steel structure overhead bridge Download PDFInfo
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- CN202787056U CN202787056U CN201220461310.XU CN201220461310U CN202787056U CN 202787056 U CN202787056 U CN 202787056U CN 201220461310 U CN201220461310 U CN 201220461310U CN 202787056 U CN202787056 U CN 202787056U
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Abstract
The utility model discloses a pier hinged structure of a steel structure overhead bridge. A column bottom steel plate is arranged at the bottom of a steel pier column; a stiffening rib plate is welded between the column bottom steel plate and the steel pier column; a bearing platform pre-embedded steel plate is arranged on the top surface of a concrete bearing platform, and a shear plate and a shear steel bar which are arranged in the concrete bearing platform are connected to the bottom surface of the bearing platform pre-embedded steel plate; a movable hinge supporting seat is arranged between the column bottom steel plate and the bearing platform pre-embedded steel plate, and each set of the movable hinge supporting seat comprises lug plate type upper ribbed plates and lug plate type lower ribbed plates which are connected with each other through pin shafts and are arranged at intervals; the lug plate type upper ribbed plates are connected with the column bottom steel plate through movable hinge top plates; and the lug plate type lower ribbed plates are connected with the bearing platform pre-embedded steel plate through movable hinge bottom plates. The pier hinged structure is simple in structure, convenient to manufacture and reasonable in stress, and can safely and reliably transfer internal force and deformation, which are generated by calculated loads, for a novel portal type steel frame overhead bridge structure, so that the beam depth of the portal type steel frame overhead bridge structure is reduced, the landscape effect is promoted, and the construction investment is reduced.
Description
Technical field
The utility model relates to the bridge construction of civil engineering, specifically, relate to a kind of day in the bridge construction the steel pier stud and the form of architecture joints of concrete bearing platform.
Background technology
Pedestrian overcrossing is the important component part of civic landscape, on the basis of satisfying the footpound force traffic function, gradually light and handy to structure, moulding is unique, span is large, bearing capacity is high, easily comprehensive requirement is installed strides forward, steel work progressively replaces the main material that concrete becomes pedestrian overcrossing.Present pedestrian overcrossing adopts the form of structure of simply supported steel box girder mostly.
According to Selection of Urban Pedestrian Overpass and underpass design specifications (CJJ 69-95), when the pedestrian overcrossing main span of simply supported steel box girder is striden the footpath when larger, deck-molding also needs to increase thereupon.For example stride the footpath when the 50m when main span, structure vertical motion fundamental frequency is satisfied in the standard greater than the requirement of 3Hz, deck-molding will reach 2.3m at least.And adopt so large deck-molding, can bring series of malpractice: structure is thick and heavy, landscape effect is not good; Under the prerequisite that satisfies 4.5 meters headroom under the bridge, the step exponent number that overline bridge need arrange increases, not hommization.
The utility model content
To be solved in the utility model is the technical problem that existing simply supported steel box girder sky bridge construction exists, a kind of pier hinged structures of steel work overline bridge is provided, its simple in structure, easily manufactured, reasonable stress, can transmit safely and reliably for novel gate-type steel work overline bridge and calculate internal force and the distortion that load produces, thereby the deck-molding of gate-type steel work overline bridge is reduced, promote landscape effect, reduce construction investment.
In order to solve the problems of the technologies described above, the utility model is achieved by following technical scheme:
A kind of pier hinged structures of steel work overline bridge comprises steel pier stud and concrete bearing platform, and described steel pier stud bottom is provided with steel plate at the bottom of the post, is welded with the floor of putting more energy between steel plate and the described steel pier stud at the bottom of the described post; Described concrete bearing platform end face is provided with the cushion cap pre-embedded steel slab of perforate, and described cushion cap pre-embedded steel slab bottom surface is connected with the shear plate that is arranged in the described concrete bearing platform, is provided with the shear reinforcement that is connected in described cushion cap pre-embedded steel slab around the described shear plate; Be provided with the moveable hinge bearing between steel plate and the described cushion cap pre-embedded steel slab at the bottom of the described post, the quantity of described moveable hinge bearing is identical with the web number of described steel pier stud, the described moveable hinge bearing of every suit comprises by floor under floor and the otic placode formula on the otic placode formula of bearing pin connection, the quantity of floor is Duoed one than the quantity of floor on the described otic placode formula under the described otic placode formula, floor interval setting under floor and the described otic placode formula on the described otic placode formula, floor is connected with steel plate at the bottom of the described post by the moveable hinge top board on all described otic placode formulas in the described moveable hinge bearing of every suit, and floor is connected with described cushion cap pre-embedded steel slab by the moveable hinge base plate under all the described otic placode formulas in the described moveable hinge bearing of every suit.
Described moveable hinge bearing be positioned at described steel pier stud web under.
Described shear plate be positioned at described moveable hinge bearing under.
Described cushion cap pre-embedded steel slab is provided with two rectangular openings.
The beneficial effects of the utility model are:
(1) the utility model can be effectively reliable transmission internal force, and by discharging the rotation release corner displacement of portal-rigid frames sky bridge construction direction across bridge, discharged the moment of flexure that TEMPERATURE FORCE produces, reduce structure stress, make structure more rationally, safety, thereby reduced the engineering quantity of bridge construction bottom, portal-rigid frames sky concrete foundation, also reduced cutting of underground utilities changed, greatly reduced construction investment.
(2) the utility model welds shear plate and shear reinforcement under the cushion cap embedded board, each that guaranteed to hand down at the bottom of the steel pier stud effectively spreads to counter-force, avoided stress to concentrate the concrete anti-compression that causes in the concrete bearing platform to destroy, guarantee simultaneously the more effective concrete bearing platform that is delivered to reliably of steel pier stud counter-force, be delivered to again pile foundation.
(3) bearing pin of moveable hinge bearing adopts the 40Cr material in the utility model, and hinge and supporting nut carry out can using after the modifier treatment, and key node adopts the material of intensity height, good toughness, thereby has guaranteed the durability of structure.
(4) cushion cap pre-embedded steel slab of the present utility model, shear plate, shear bar all are prefabricated in the factory and finish, at the bottom of the post on steel plate, the floor of putting more energy into, moveable hinge top board, moveable hinge base plate, the otic placode formula under floor and the otic placode formula floor also finish in that factory process is prefabricated, both guaranteed architecture quality, the while simple structure, fabrication and installation are convenient.
(5) offer two rectangular openings on the cushion cap pre-embedded steel slab of the present utility model, guaranteed that the cushion cap concreting of scope under the cushion cap pre-embedded steel slab is closely knit, thereby guarantee the stressed safety of overall structure.
In sum, the utility model is simple in structure, power transmission is reliable, good endurance, minimizing construction investment, can make structure design, construction and application more rational, and have stronger comprehensive economic index in the cycle at whole service life, become having a extensive future of important composition member in the pedestrian overcrossing portal frame structure.
Description of drawings
Fig. 1 is that the suitable bridge of pier hinged structures provided by the utility model is to sectional drawing;
Fig. 2 is the direction across bridge sectional drawing of pier hinged structures provided by the utility model;
Fig. 3 is the A-A sectional drawing of Fig. 1;
Fig. 4 is the B-B sectional drawing of Fig. 1;
Among the figure: 1, steel plate at the bottom of the post; 2, the moveable hinge top board; 3, floor on the otic placode formula; 4, floor under the otic placode formula; 5, the moveable hinge base plate; 6, the cushion cap pre-embedded steel slab; 7, bearing pin; 8, the steel pier stud; 9, the floor of putting more energy into; 10, concrete bearing platform; 11, shear plate; 12, rectangular opening.
The specific embodiment
For further understanding content of the present utility model, characteristics and effect, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
Adopt the hinged whole gate-type steel work overline bridge form of the fixed side of a side, replace traditional simply supported steel box girder sky bridge construction, can significantly improve overline bridge superstructure vertical motion fundamental frequency, avoid resonance, greatly reduce deck-molding, promote landscape effect.The pier hinged structures of one side, as the important connecting elements between steel pillarwork and the concrete bearing platform in the gate-type gate-type steel work sky bridge construction, need are delivered to cushion cap with all internal force of superstructure reliably.
As shown in Figures 1 to 4, present embodiment has disclosed a kind of pier hinged structures of steel work overline bridge, mainly comprises steel plate 1 at the bottom of steel pier stud 8, the post, concrete bearing platform 10, cushion cap pre-embedded steel slab 6, shear plate 11, shear bar, moveable hinge bearing and moveable hinge top board 2, moveable hinge base plate 5 etc.
Steel pier stud 8 bottom weldings have steel plate 1 at the bottom of the post, are welded with respectively three floors 9 of putting more energy at the bottom of the both sides of steel pier stud 1 and the post between the steel plate 1.
Concrete bearing platform 10 end faces are provided with cushion cap pre-embedded steel slab 6, and the end face of cushion cap pre-embedded steel slab 6 flushes with concrete bearing platform 4 end faces.Offer two rectangular openings 12 on the cushion cap pre-embedded steel slab 6, closely knit with the cushion cap concreting that guarantees 6 times scopes of cushion cap pre-embedded steel slab.
Be provided with the moveable hinge bearing between steel plate 1 and the cushion cap pre-embedded steel slab 6 at the bottom of the post, and every cover moveable hinge bearing is corresponding to the position setting of steel pier stud 8 every webs.Every cover moveable hinge bearing comprises multiple tracks otic placode formula floor, the moveable hinge bearing and wherein the quantity of otic placode formula floor according to the design shear calculative determination.As shown in Figure 1, three cover moveable hinge bearings are set in the present embodiment, every suit moveable hinge bearing comprises on three otic placode formulas floor 4 under floor 3 and the four otic placode formulas, is connected with floor 3 on the otic placode formula by bearing pin 7 between the floor 4 under per two otic placode formulas, to guarantee the stability of moveable hinge bearing.On the otic placode formula under floor 3, the otic placode formula floor 4 and bearing pin 7 should process and install in strict accordance with precision and the tolerance of designing requirement, after guaranteeing installation, on the otic placode formula under floor 3 and the otic placode formula floor 4 can freely rotate along bearing pin 7 bearing pin 7 material selection 40Cr.After the installation of moveable hinge bearing, be coated with butter between the floor 4 under floor 3, the otic placode formula on bearing pin 7 and the otic placode formula, in order to avoid the corrosion impact is rotated.
Moveable hinge bearing outer packaging decorations adopt trap, and packing decorations trap is bolted respectively on steel plate at the bottom of the post 1 and cushion cap pre-embedded steel slab 6 at two ends up and down, to be easy to open Survey Operations hinged-support situation.
Moveable hinge bearing below is provided with 11, two shear plates 11 of two shear plates and lays respectively at the in twos position between the moveable hinge bearing, is provided with shear reinforcement around the every shear plate 11.Shear plate 11 and shear reinforcement are arranged in the concrete bearing platform 10, and weld together with cushion cap pre-embedded steel slab 6.The quantity of shear plate 11 is according to the design shear calculative determination, and it is with respect to the distributing position of moveable hinge bearing, take the central point of making a concerted effort of guaranteeing both unanimously as principle.
The pier hinged structures of present embodiment is before construction, at first can adopt MIDAS CIVIL2006 version software that portal-rigid frames sky bridge construction is carried out analytical calculation, content mainly comprise dead load, second phase mat formation, pedestrian load, integral elevating temperature, Manchu's load, snow load, wind load, seismic load etc., obtain steel pier stud and concrete bearing platform hinged structures node least favorable Load Combination value by analytical calculation.Wherein, multi-column pier foundation can be reduced to resiliency supported by the principle that unit force effect bottom offset equates to the resiliency supported effect of superstructure.
Then according to every least favorable Load Combination value each member of pier hinged structures is carried out force analysis, and then determine and guarantee hinged scantling and the requirement of realization between steel pier stud 1 and the concrete bearing platform 4.The depth of section of steel pier stud 8 is 1200mm in the present embodiment, and width is 1800mm, at first calculates number and the height that the floor 9 of putting more energy into need be established in direction across bridge steel pier stud 8 outsides according to counter-force at the bottom of the post; Then according to the number of floor 3 on the shear force calculation otic placode formula at the bottom of the post, the number of floor 4 is that floor 3 numbers add 1 on the otic placode formula under the otic placode formula; Then every stressed according to the tension and compression curved scissors of analytical calculation hinged place, and fatigue stress, determine diameter and the length of pivot pin 7; Then in like manner according to the cushion cap top counter-force result of analytical calculation, determine size and the quantity of shear plate 11, shear reinforcement.
All welded units that relate to are all finished in factory process, carry out fluid concrete behind the location at the scene, and concrete need guarantee casting quality.
One, preparation of construction
Floor 4, moveable hinge base plate 5, cushion cap pre-embedded steel slab 6, bearing pin 7, steel pier stud 8, put more energy into floor 9, shear plate 11 and shear reinforcement under floor 3, the otic placode formula on the steel plate 1, moveable hinge top board 2, otic placode formula at the bottom of factory is according to the design prefabricated post, and finish the welding job of prefabricated units under prefabricated units and steel pier stud 8 on moveable hinge preburied component, the moveable hinge, the moveable hinge.The moveable hinge preburied component comprises cushion cap embedded board 6, shear plate 11 and shear reinforcement.Prefabricated units comprise floor 3 on steel plate 1 at the bottom of the post, the floor 9 of putting more energy into, moveable hinge top board 2 and the otic placode formula on the moveable hinge.Prefabricated units comprise floor 4 under moveable hinge base plate 5 and the otic placode formula under the moveable hinge.
Simultaneously emit the sideline of concrete bearing platform 4 by survey crew according to construction drawing, the physical dimension of foundation ditch extends out 80cm according to concrete bearing platform 4 sizes and discharges.Excavate the gutter around the foundation ditch, the diagonal angle arranges two mouthfuls of collecting wells, and built-in suction pump guarantees that groundwater table is not higher than at the bottom of the foundation ditch.When cushion construction, pre-buried 4 location piling bars in blinding concrete.The cushion cap bed course build complete after, on concrete bearing platform 4, eject cushion cap pre-embedded steel slab 6 axis with the line of ink marker.
Two, concrete bearing platform 10 base plate steel bar bindings, welding
Baseplate reinforcing bar uses the galvanized wire colligation, and colligation is pressed blossom type and arranged.Weld length strictly is not less than in accordance with regulations 5d and holds, and the weld bond place should beat totally, guarantees that concrete and rebar connects closely.
Three, steel pier stud 8 is installed with the moveable hinge preburied component
After base plate steel bar binding is complete with welding, the moveable hinge preburied component is installed.The moveable hinge preburied component adopts crane jack fine setting in place, makes it to overlap fully with axis, and four jiaos of discrepancy in elevation of end face are controlled in the 2mm.After finish moveable hinge preburied component location, make it and locate the piling bar firm welding.
Four, concrete bearing platform 10 top board reinforcing bar binding and formworks
Colligation cushion cap top board reinforcing bar avoids colliding built-in fitting during with moveable hinge preburied component cross section reinforcement construction as far as possible, prevents that it from producing displacement.Again proofread and correct position and the elevation of built-in fitting after reinforced bar engineering is finished, confirm errorless after, reinforce with hawser, prevent from when concreting producing displacement.
Five, concrete bearing platform 10 concretings and maintenance
The strength grade of concrete of concrete bearing platform 10 structures is C30, and concreting adopts pump truck to build, and vibrates with poker vibrator, and the layering of concrete delamination building is vibrated, and building thickness for every layer must not be greater than 500mm.Vibrator spacing 40cm inserts once rod, about vibrating time 20s, until without till the bubble, must not cross and shake and leakage is shaken.When vibrating last layer, vibrator should insert in the following layer concrete, guarantees up and down well combination of two layer concretes.Concreting should be built first moveable hinge preburied component periphery and cushion cap pre-embedded steel slab 6 belows, makes concrete from here to external diffusion, prevents blank and concrete disintegration herein, should strengthen simultaneously vibrating, and guarantees its compactness.After concreting is complete, receives slurry for three times with wood float and plasterer's trowel and wipe one's face, guarantee concrete bearing platform 4 surfacings.Cover with geotextiles, diligent watering, the maintenance of outer cover plastic sheeting heat and moisture preserving avoids concrete bearing platform 4 surfaces shrinkage crack to occur simultaneously.After the concrete curing 7 days, dismountable template.
Six, the installation of moveable hinge bearing
Site Welding cushion cap pre-embedded steel slab 6 and moveable hinge base plate 5, purpose are to eliminate girder mismachining tolerance and moveable hinge preburied component construction error.For accurate positioning and easy construction, the bottom surface of steel plate 1 at the bottom of post, i.e. four blocks of temporary supporting plates of moveable hinge support outer welding play the effect of temporary supporting steel pier stud 8 loads and convenient fine setting steel pier stud 8.Treat after the girder location and installation on-the-spot pivot pin 7, the fastening bolt installed.Weld seam order with welding cushion cap top embedded board 6 and moveable hinge base plate 5 is removed gripper shoe successively.At last moveable hinge bearing and weld seam are carried out antirust processing and paint spraying, seal up shrouding.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make the concrete conversion of a lot of forms, these all belong within the protection domain of the present utility model.
Claims (4)
1. the pier hinged structures of a steel work overline bridge comprises steel pier stud and concrete bearing platform, it is characterized in that, described steel pier stud bottom is provided with steel plate at the bottom of the post, is welded with the floor of putting more energy between steel plate and the described steel pier stud at the bottom of the described post; Described concrete bearing platform end face is provided with the cushion cap pre-embedded steel slab of perforate, and described cushion cap pre-embedded steel slab bottom surface is connected with the shear plate that is arranged in the described concrete bearing platform, is provided with the shear reinforcement that is connected in described cushion cap pre-embedded steel slab around the described shear plate; Be provided with the moveable hinge bearing between steel plate and the described cushion cap pre-embedded steel slab at the bottom of the described post, the quantity of described moveable hinge bearing is identical with the web number of described steel pier stud, the described moveable hinge bearing of every suit comprises by floor under floor and the otic placode formula on the otic placode formula of bearing pin connection, the quantity of floor is Duoed one than the quantity of floor on the described otic placode formula under the described otic placode formula, floor interval setting under floor and the described otic placode formula on the described otic placode formula, floor is connected with steel plate at the bottom of the described post by the moveable hinge top board on all described otic placode formulas in the described moveable hinge bearing of every suit, and floor is connected with described cushion cap pre-embedded steel slab by the moveable hinge base plate under all the described otic placode formulas in the described moveable hinge bearing of every suit.
2. the pier hinged structures of a kind of steel work overline bridge according to claim 1 is characterized in that, described moveable hinge bearing be positioned at described steel pier stud web under.
3. the pier hinged structures of a kind of steel work overline bridge according to claim 1 is characterized in that, described shear plate be positioned at described moveable hinge bearing under.
4. the pier hinged structures of a kind of steel work overline bridge according to claim 1 is characterized in that, described cushion cap pre-embedded steel slab is provided with two rectangular openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461310.XU CN202787056U (en) | 2012-09-11 | 2012-09-11 | Pier hinged structure of steel structure overhead bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461310.XU CN202787056U (en) | 2012-09-11 | 2012-09-11 | Pier hinged structure of steel structure overhead bridge |
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| Publication Number | Publication Date |
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| CN202787056U true CN202787056U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220461310.XU Expired - Lifetime CN202787056U (en) | 2012-09-11 | 2012-09-11 | Pier hinged structure of steel structure overhead bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808375A (en) * | 2012-09-11 | 2012-12-05 | 天津市市政工程设计研究院 | Hinge structure of steel pier column of portal frame platform bridge and bearing platform and construction method thereof |
-
2012
- 2012-09-11 CN CN201220461310.XU patent/CN202787056U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808375A (en) * | 2012-09-11 | 2012-12-05 | 天津市市政工程设计研究院 | Hinge structure of steel pier column of portal frame platform bridge and bearing platform and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20130313 |